How do you know that is the letter the Angelus was referring to?
Where is the letter, then? Where is ANY letter where +Thuc admitted this? Without PROOF that +Thuc said he withheld intention, then you must, PER CANON LAW, presume validity.
If you are referring to Fr. Jenkins' claim about having interviewed Dr. Hiller and Dr. Heller and recording it on tape, it is referenced and transcribed in "The Sacred and the Profane" by Bishop Kelly. His book is available online. https://congregationofstpiusv.com/wp-content/uploads/2020/05/SacredandProfane.pdf
I will email Fr. Jenkins myself and ask if he has produced these recordings and if not, to please do so. I will get back to everyone here about that.
Who cares who Fr Jenkins interviewed? This proves nothing. It's hearsay. It's just opinion. Unless Fr Jenkins interviewed +Thuc personally, then this interview with 3rd parties isn't any kind of proof.
How about I have a taped interview with Matthew, the owner of this site, and we discuss the fact that the user, Maria Dolorosa, is a fake catholic? Is our interview proof of anything? Of course not.